Add azurecli tag per discussion with team.

Author: TimShererWithAquent

articles/container-registry/container-registry-faq.md

@@ -110,13 +110,13 @@ ACR supports Docker Registry HTTP API V2. The APIs can be accessed at
 
 If you are on bash:
 
-```bash
+```azurecli
 az acr repository show-manifests -n myRegistry --repository myRepository --query "[?tags[0]==null].digest" -o tsv  | xargs -I% az acr repository delete -n myRegistry -t myRepository@%
 ```
 
 For Powershell:
 
-```powershell
+```azurecli
 az acr repository show-manifests -n myRegistry --repository myRepository --query "[?tags[0]==null].digest" -o tsv | %{ az acr repository delete -n myRegistry -t myRepository@$_ }
 ```